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Greetings,...
I'm working on a lab/science-project the goal of which is, for common
transparent materials, to compare their %visible transmission with
their %infrared transmission ....
Finally, I set up a radiometer--the toy type we often use in
class--and a strobe and found that the rpm of the spinning vanes is
indeed both easily measureable and is inversely proportional to the
number of layers of plexiglass between it and the infrared lamp. Has
anyone done this? Comments?
Any suggestions for an artificial source suitable for the project?
Thanks, LEon Leonardo